Wear and Friction Evaluation of Different Tool Steels for Hot Stamping

Table 4

Average COF.

Material	Test temperature (°C)	Average COF
Steel 1	40	0.90 ± 0.005
	200	0.80 ± 0.005
Steel 2	40	1.00 ± 0.005
	200	0.90 ± 0.005
Steel 3	40	0.80 ± 0.005
	200	0.70 ± 0.005